It's good to hear from you, but I'm sorry you're having some difficulty. If you had a stomach bug and did some retching, it's possible that you irritated things that had been healing nicely and it has set your recovery back a bit.
If you're not feeling reflux, that's a really good thing. I think your idea of taking PPIs for a bit is probably a good one. Your discomfort sounds like irritation, and it might calm things down.
Are you being extra-careful with your eating? It takes time to heal an irritated upper GI tract. It takes an annoying amount of time, actually!
Is there no chance that you have some allergy going on, in addition to your GI irritation? The pollen season has been terrible over here, and people who "don't have allergies" are having symptoms. Just a thought.
Try the PPIs and careful eating (for an extended time) and see if you get some relief. Remember that you still have 6 months of healing to get to the year mark, and I can tell you from experience that some of those quirks that seemed like they'd be with me forever, disappeared at the year mark or a bit later.
Hope you feel better very soon!
Words of wisdom by Eckhart Tolle:
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”